Ship-hull construction.



1, FENWICK. SHEP HULL CONSTRUCTION. APPLLCATLON FILED 061.'. 3. 1916. 111%, 1. Patented Sept. 11, 1917.

2 SHEETS-SHEET 2.

STATJ PATENT @FFQE' THOMAS FEN'WICK, 0F MBILE, ALBMI.,

Application filed Gotober 3, 1916. Serial No. 123,533.

To all whom mag/ concern: l Be it known that I, THOMAS FENWICK, a citizen of the United States, residing at Mobile, in the county oflvlobile and State of Alabama, have invented new and useful Improvements in Ship-Hull Constructions, of which the following is a specification.

rfhis invention relates to marine vessels and particularly to the hull construction, the object in view being to produce a strong, efficient-and leal; proof hull structure made up of steel or iron and concrete combined,

the metal parts of the structure being sol arranged relatively to each other and to the frame and other parts of the hull, and the concrete having such relation to the metal parts, that thoroughly rigid, strong and enduring hull structure is obtained, the saine being comparatively light and of less thickness than the ordinary present day hull structure, producing` a smooth exterior and' interior surface and increasing the carrying capacity of the hold.

lilith the above and other objects in view, the invention consists in the novel construction, combination and arrangement herein fully described, illustrated and claimed.

In the accompanying drawings:-

Figure l is a plan view partly in section of a hull structure embodying the present invention, v

Fig. 2 is a vertical transverse section through the same on a line 2-2 of Fig. 1,

llig. 3 is an enlarged vertical transverse section through one of the sides or Walls of the hull.

ln carrying out this invention, all of the .valls and if desired the botl ni the hull are composed of an outer sf metal slrin or sheathing l, in shell, sinn or sheathing 2 and an interrne iate shell 3, the several shells l, 2 and 3 being composed of sheet metal, and each being made up of a plurality of plates of any desired size riveted or otherwise firmly secured together, each of the members l, 2 and 3 being practically Water-tight in itself.

The inner sheathing or shell 2 is fastened securely to the outer faces of the ribs or frame members L which rnaybe of any desired shape or curvature according to the shape of the vessel or hull. These ribs or frames el are preferably made of steel and they are connected in transversely opposed pairs of metal ties or carlines 5 giving the necessary rigidity 'to the ,complete hull and Specification of Letters Patent.

SEEE-RULE CONSTRCTIION.

avoiding the spreading or collapsing of the Patented Sept. di, 19112.]

sa ie under excessive pressures both internal and external. The outer shell or sheathing l has securely fastened to the inner face thereof by means of rivets or other suitable fasteners, steel bars G which extend in parallel relation to' the ribs or frames 4. The bars`6' may be' located at any desired distance apart and the frames or ribs 4 may also be located .at

any' desired intervals. 'Tie bolts or rods/7 l connect the outer and inner shells or sheathings and maintain the saine in a fixed and spaced relation to each other, Within the space 8 left between' the members 2 and 3 there is a filling of concrete indicated at 9, the mass ofconcrete being preferably of such a consistency that it may be poured into the space S so as to completely fill said space and also fill any crevices caused by the formation ofthe hull to receive the tie rods and bolts hereinabove referred to.

As hereinabove stated, the bottom of the hull may be formed in the same manner as the sides thereof and Where the hull is'of t-he round bottom or dead rise type, the inner and outer shells together with the ribs or frame members and the bars 6 may be joined to the keel. likewise be formed in the saine manner to comprise the inner and outer shells With the ribs, bars and the filling of concrete, the Whole producing a hull structure which is Water-tight, practically indestructible and Which Will resist the action of salt Water and other elements.

The construction hereinabove described is' adapted to hulls of all kinds such as those of ships, barges and all marine vessels of any character whatsoever. The bulli heads, the bed for the engine, the bed for the boiler, and the housing for the propeller shaft may The inside keel or keelson may also be built up in the same manner of metal and concretef The lreelson may be embedded in concrete of sufficient thickness to lie flush with the top of the keelson thereby producing a sanitary and fire-proof structure. Greater 4 cargo space is provided for and the several parts of the hull maybe easily assembled and the entire structurecompleted at places What is claimed is:

l. bination oif 'an inner metal sheathing, frame v spaced relation to the inner sheathing, metal vie bars vJastened to the inner surface of saidl outer sheathing and arranged transversely 'opposite and substantially parallel to the inside frame members, tie bolts extending perpendicularly toand through the outer and innersheathings and maintaining the same in a ixd and spaced relation to each other, and a lling of concrete between said outer and inner sheathings. l

2.-]n marine hull construction, the combin tion of an inner metal sheathing, frame pieces to which said inner sheathing is fastened, an outer metal sheathing arranged in spaced relation yto the inner sheathing, an intermediate shell between and in spaced relation to said inner and outer sheathings,

metal bars-fastened to the inner surface of said outer sheathing and arranged transversely opposite and substantially parallel to the inside frame members, tie bolts eX- i. 'ifnrniarine hull construction, the oom-v tending perpendicularly to and throughA the outer and inner sheathings and also through the intermediate shell, and a lling of concrete between said intermediate shell and the inner sheathing.

3. ln marine hull construction, the 'combination of an inner metal sheathing, frame piecesto which said inner sheathing is fastened, an outer metalsheathing arranged in spaced relation to the inner sheathing, an intermediate shell between `and 'in spaced relation to said inner and outer sheathings, metal bars fastened to the inner surface of said outer sheathing and arranged trans- Versely opposite and substantially parallel to the inside frame members, tie bolts extending perpendicularly to and through the outer and inner sheathings'and also through the intermediate shell, a filling of concrete between said intermediate shell and the inner sheathing, and tie members extending transversely across the hull and connecting oppositely located trame members.

In' testimony whereof I aliix my signature.

THOMAS FENVVICK.

@enten et this patent may he obtained fer fwe cents each, by addressing the ommssiener :2f-Patents,

v Washingtem, E. C. 

